盖挖逆作施工群塔布置设计及作业技术研究
作者简介:
吴余海,正高级工程师,E⁃mail:13501103402@ 126. com
作者单位:
北京北投静态交通投资运营有限责任公司,北京 101117
摘要:
针对盖挖逆作施工中的塔式起重机基础设计及施工、群塔作业的安全性进行研究,研发了 X 形支撑柱加固装置,保证了塔式起重机基础的稳定性,增大了安全系数. 优化了塔式起重机基础支撑桩柱施工方法,采用先插法将钢管柱与抗拔桩钢筋笼可靠连接后同时吊装至设计标高,保证了垂直度,提高了施工效率. 采用 MIDAS 有限元软件分析了塔式起重机基础稳定性,利用 Revit 建模技术进行了群塔布置防碰撞模拟,避免了多塔同时作业发生碰撞的现象.

English:
A study was conducted on the design and construction of tower crane foundations, as well asthe safety of group tower operations during cover excavation reverse construction. An X⁃shaped supportcolumn reinforcement device was developed to ensure the stability of the tower crane foundation andincrease the safety factor. The construction method of the tower crane foundation support pile column hasbeen optimized. The steel pipe column is reliably connected to the anti⁃pull pile reinforcement cage usingthe first insertion method, and then lifted to the design elevation at the same time, ensuring verticalityand improving construction efficiency. The stability of the foundation of the tower crane was analyzedusing MIDAS finite element software, and the collision avoidance simulation of the group tower layout wascarried out using Revit modeling technology, which prevented the occurrence of collisions duringsimultaneous operation of multiple towers.